Serface, Zack
Current rating: 1578
Record: 28-26-1
| Grand Prix Reno 2020 (THB limited) | starting rating: 1565 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 38 | Cotton, Alexander (1440) | Won 2-0 | +161581 |
| 2sealed | 152 | Polotan, Justin (1651) | Won 2-0 | +191600 |
| 3sealed | 56 | Chen, Michael (1724) | Lost 1-2 | -151585 |
| 4sealed | 185 | Johnson, Jackie (1451) | Won 2-1 | +151600 |
| 5sealed | 101 | Pence, Matthew (1666) | Lost 0-2 | -171583 |
| 6sealed | 120 | Bodayle, Bryn (1519) | Won 2-0 | +171600 |
| 7sealed | 79 | Bridges, Kayla (1361) | Lost 1-2 | -221578 |
| top | average opponent: 1544record: 4-3 | new rating: 1578 | ||
| Grand Prix San Jose 2017 (AER limited) | starting rating: 1561 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 107 | Crosby, Brandon (1690) | Won 2-1 | +201581 |
| 4sealed | 117 | Cochran, Hunter (1876) | Lost 0-2 | -131568 |
| 5sealed | 252 | Young, Chad (1534) | Won 2-0 | +171585 |
| 6sealed | 95 | Aguilera, Ryder (1794) | Won 2-0 | +221607 |
| 7sealed | 131 | Huang, Kenny (1580) | Lost 1-2 | -181589 |
| 8sealed | 93 | Tan, Richard (1844) | Lost 0-2 | -141575 |
| 9sealed | 315 | Whaley, Jerry (1657) | Won 2-0 | +201595 |
| 10draft | 214 | Jacobson, Mark (1962) | Lost 0-2 | -121583 |
| 11draft | 207 | Sanchez, Robert (1598) | Lost 0-0 | -181565 |
| top | average opponent: 1726record: 4-5 | new rating: 1565 | ||
| Grand Prix Portland 2016 (EMN standard) | starting rating: 1581 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 139 | King, Peter (1667) | Won 2-0 | +191600 |
| 4standard | 57 | Cornett, Thomas (1555) | Lost 0-2 | -191581 |
| 5standard | 221 | Thompson, Brad (1350) | Lost 1-2 | -221559 |
| 6standard | 435 | Colt, Cody (1508) | Won 2-0 | +171576 |
| 7standard | 278 | Merced, Davis (1704) | Lost 0-2 | -151561 |
| top | average opponent: 1557record: 2-3 | new rating: 1561 | ||
| Grand Prix Los Angeles 2016 (modern) | starting rating: 1588 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 446 | Moon, Kevin (1536) | Lost 0-2 | -191569 |
| 3modern | 671 | Miller, Bryce (1501) | Won 2-0 | +171586 |
| 4modern | 601 | Rho, Justin (1517) | Lost 0-2 | -191567 |
| 5modern | 738 | Watson, Nephi (1418) | Won 2-0 | +151582 |
| 6modern | 476 | Walters, Noah (1559) | Won 2-1 | +181600 |
| 7modern | 254 | Samson, Jacob (1530) | Lost 1-2 | -191581 |
| top | average opponent: 1510record: 3-3 | new rating: 1581 | ||
| Grand Prix Oakland 2016 (BFZ standard) | starting rating: 1493 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 325 | Jordan, Daniel (2044) | Won 2-1 | +271520 |
| 3standard | 285 | Pugh, Kyle (1628) | Lost 1-2 | -161504 |
| 4standard | 548 | Sellers, Michael (1480) | Lost 1-2 | -181486 |
| 5standard | 458 | Najera, Juan (1471) | Won 2-0 | +171503 |
| 6standard | 452 | Peter, Chad (1447) | Won 2-0 | +171520 |
| 7standard | 190 | Husbands, Brian (1591) | Won 2-0 | +201540 |
| 8standard | 148 | Puno, Cyril (1521) | Won 2-1 | +171557 |
| 9standard | 107 | Green, Marcell (1497) | Won 2-1 | +171574 |
| 10standard | 34 | Lundquist, Ben (2113) | Lost 0-2 | -91565 |
| 11standard | 84 | Engbrecht, Ryan (1547) | Won 2-1 | +181583 |
| 12standard | 103 | Teranishi, Daniel (1578) | Won 2-0 | +181601 |
| 13standard | 42 | Kibler, Brian (1926) | Lost 0-2 | -131588 |
| top | average opponent: 1654record: 8-4 | new rating: 1588 | ||
| Grand Prix San Diego 2015 (ORI standard) | starting rating: 1461 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 97 | Eakins, Loren (1683) | Lost 1-2 | -141447 |
| 3standard | 436 | Baker, Sam [USA] (1551) | Won 2-0 | +191466 |
| 4standard | 384 | Pearce, Seth (1571) | Won 2-0 | +201486 |
| 5standard | 124 | Brown, Steven (1674) | Draw 1-1 | +41490 |
| 6standard | 198 | Rodriguez, Omar (1536) | Won 2-1 | +191509 |
| 7standard | 118 | Monge, Jose (1636) | Lost 0-2 | -161493 |
| top | average opponent: 1609record: 3-2-1 | new rating: 1493 | ||
| Grand Prix Las Vegas 2015 (2) (MM2 limited) | starting rating: 1498 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 276 | Garcia, Arnold (1488) | Lost 1-2 | -181480 |
| 2sealed | 424 | Rowe, Jeffrey (1482) | Lost 1-2 | -181462 |
| 3sealed | 521 | Palmer, Michael (1406) | Won 2-0 | +171479 |
| 4sealed | 437 | Duhon, Joshua (1481) | Lost 0-2 | -181461 |
| top | average opponent: 1464record: 1-3 | new rating: 1461 | ||
| Grand Prix Sacramento 2014 (THS limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 161 | Anders, Lars (1464) | Won 2-1 | +171517 |
| 2sealed | 81 | Brust, Scott (1517) | Lost 0-2 | -181499 |
| 3sealed | 239 | Dorn, Victoria (1466) | Won 2-0 | +181517 |
| 4sealed | 327 | Meyer, Ben (1518) | Won 2-1 | +181535 |
| 5sealed | 163 | Boucher, Chris (1534) | Lost 1-2 | -181517 |
| 6sealed | 241 | Wong, Daniel (1458) | Lost 0-2 | -191498 |
| top | average opponent: 1493record: 3-3 | new rating: 1498 | ||